> Two musical traditions developed in complete isolation would be different, but not completely different. There is still an underlying theory that unifies them to some extent.
What theory do you have in mind? My (limited) understanding is that across cultures there is wide variance in rhythms, time signatures, how many tones span each octave and what emotions are associated with different intervals and chords.
What theory do you have in mind? My (limited) understanding is that across cultures there is wide variance in rhythms, time signatures, how many tones span each octave and what emotions are associated with different intervals and chords.